/*
 * Copyright (C) 2003-2009 eXo Platform SAS.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.crsh.util;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;

/**
 * Extends the {@link java.io.ByteArrayOutputStream} for providing an input stream over the
 * buffer.
 *
 * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
 * @version $Revision$
 */
public class BytesOutputStream extends ByteArrayOutputStream {

  /** . */
  private boolean closed;

  public BytesOutputStream() {
  }

  public BytesOutputStream(int size) {
    super(size);
  }

  public InputStream getInputStream() {
    if (!closed) {
      throw new IllegalStateException("Not yet closed");
    }
    return new InputStream() {

      /** . */
      int read = 0;

      @Override
      public int read() throws IOException {
        if (read < count) {
          return buf[read++];
        } else {
          return -1;
        }
      }
    };
  }

  @Override
  public void close() throws IOException {
    super.close();

    //
    closed = true;
  }
}
